It's interesting to note how affectionate the couple are in public, as PDA is a rare occurrence for the Royal Family when they're appearing at official events. As People.com notes, the Duke and Duchess of Cambridge are rarely seen engaging in PDA, as it's expected that a certain stoic decorum should be followed. But it shows just how serious the prince is about Markle.

Samir Hussein via Getty ImagesLook, cuddling!

According to the Telegraph, Harry is already familiar with Markle's mom, having met her earlier this year when she visited London, where Markle gave her a tour of her home away from home.

Karwai Tang/WireImageOutfits on point for Doria Radlan and daughter Meghan Markle.

"Right now you're on a high — at the summit of a mountain many of you thought was too high to climb. You have done it. This is the moment, right here, right now, shoulder to shoulder, you are Invictus," Harry,33, told the competitors to a cheering crowd.

WireImageMeghan Markle and Prince Harry are seen at the Closing Ceremony of the Invictus Games Toronto 2017 at the Air Canada Centre on September 30, 2017. (Karwai Tang/WireImage)

"He was super low key, met some crew and was so happy to watch his lady," a source told Hello. "He's incredibly supportive of her work."

"Meghan showed him around set," the source added. "Everyone was so excited."

WireImageMeghan Markle and Prince Harry are seen on day 8 of the Invictus Games Toronto 2017 on September 30, 2017. (Karwai Tang/WireImage)

Their appearances together in Toronto has sparked more engagement speculation, especially on the heels of that now-famous Vanity Fair interview, where Markle declared her and Harry to be "in love."

"We're a couple. We're in love," Markle told the mag for their Oct. 2017 issue. "I'm sure there will be a time when we will have to come forward and present ourselves and have stories to tell, but I hope what people will understand is that this is our time. This is for us. It's part of what makes it so special, that it's just ours. But we're happy. Personally, I love a great love story."